Peer Review) THE ESTIMATION ACCURACY OF LIVE WEIGHT FROM METRIC BODY MEASUREMENTS IN ONGOLE GRADE COWS
Peer Review) THE ESTIMATION ACCURACY OF LIVE WEIGHT FROM METRIC BODY MEASUREMENTS IN ONGOLE GRADE COWS
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同行评审）根据 ONGOLE 级奶牛公制身体测量估算活重的准确性
DOI：
10.14710/jitaa.38.3.149-155
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
U. Paputungan
中科院分区：
文献类型：
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作者：
U. Paputungan
北苏拉威西省的长度。动物活重(LW)、体长(BL)和胸围(CG)的数据来自传统农户饲养的所有奶牛(n=363)。通过回归分析，从所有的线性身体测量中估计LW。数据按年龄分为五组，第一年龄组为两岁半，第五年龄组为七岁半。结果表明，年龄对各项体尺指标均有显著影响(P<；0.05)。在所有年龄组中，所有测量对之间的相关性都非常显著(P<；0.001)。回归分析表明，胸围和体长能较准确地预测活体重(R2=0.97)。根据年龄在2.5~≥7.5日龄范围内的变量，可推荐用多元回归模型预测贡果县母牛的活重：活重(Kg)=-806.410+4.79835 CG(Cm)+2.83500 BL(Cm)。
length in North Sulawesi province. Data on animal live weight (LW), body length (BL) and chest girth(CG) were collected from all cows (n=363) kept by traditional household farmers. Regression analysiswas carried out to estimate LW from all linear body measurements. Data were classified based on age ofanimals consisted of five groups with the first age group of two and half years old, to the fifth age groupof seven and half years old. The results showed that age significantly (P<0.05) influenced all bodymeasurements. Correlations between all pairs of measurements were highly significant (P<0.001) for allage groups. Regression analysis showed that live weight could be predicted accurately from chest girthand body length (R2=0.97). Multiple regression model can be recommended to predict live weight ofOngole grade cows based on those variables with their age groups ranging from 2.5 to ≥7.5 years old asfollows: Live weight (kg) = -806.410 + 4.79835 CG (cm) + 2.83500 BL (cm).